US PATENT SUBCLASS 84 / 249
.~.~.~.~.~ Jointed jack

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
173  DF  .~ Stringed {10}
174  DF  .~.~ Pianos {19}
236  DF  .~.~.~ Hammers actions {3}
243  DF  .~.~.~.~ Details {9}
249.~.~.~.~.~ Jointed jack

DEFINITION

Classification: 84/249

The jack is pivoted at top and bottom and jointed near the middle--a kind of reversed toggle.